Объяснение:
1) a²2/7a+1/49
2) 1/81+2/9b+b²
3) n²/16+nm/6+m²/9
4) k²/4-kt/5+t²/25
5) 168/9-26/3x+x²
6) y²+13/2y+169/16
7) z²-52/5z+676/25
8) 81/4+9t+t²
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Объяснение:
1) a²2/7a+1/49
2) 1/81+2/9b+b²
3) n²/16+nm/6+m²/9
4) k²/4-kt/5+t²/25
5) 168/9-26/3x+x²
6) y²+13/2y+169/16
7) z²-52/5z+676/25
8) 81/4+9t+t²